Nut-lock.



No. 072,132. Patented Apr. 16, I901. B. c. MORGAN & H..H. mun, m. NUTLOCK.

(Application filed Oct. 15, 1900.)

(No Model.)

THE NORRIS PETERS co. WUTQUTNQ, wuumc-Yon. n. a

UNITED STATES PATENT EEicE.

BENNETT O. MORGAN AND HARRY H. MAIN, JR., OF SAN JOSE, CALIFORNIA.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 672,132, dated. April16, 1901. Application filed October 15, 1900. Serial No. 33,143. (Nomodel.)

To all whom it may concern:

Be it known that we, BENNETT C. MORGAN and HARRY H. MAIN, Jr., citizensof the United States, residing at San Jose, in the county of Santa Claraand State of California, have invented a new and useful Nut-Lock, ofwhich the following is a specification.

This invention relates to nut-locks, and has for its object to providean improved device of this character in which the nut may beconveniently and effectively locked against accidental displacement, andalso conveniently removed and replaced without damaging either the nutor the bolt. It is furthermore designed to provide for expanding thebolt so as to lock the nut thereon and to conveniently contract the boltfor removing the nut therefrom; also, to maintain the bolt in anormally-contracted condition and free from lateral projections in orderthat it may be conveniently thrust through a bolt-opening and incondition for the reception of a nut.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter more.fully described, shown in the accompanying drawings, and particularlypointed out in the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure l is a perspective view of a bolt constructed inaccordance with the present invention and arranged for applying andremoving a nut therefrom. Fig. 2 is a similar view showing a nut lookedupon the bolt.

Corresponding parts arefiesignated by like characters of reference inboth figures of the drawings.

Referring to the drawings, 1 designates a bolt,whioh is formed from astrip of half-round metal, which is bent intermediate of its ends so asto form the eye or head 2, while the greater portions of its oppositeflat sides are brought together, so as to form a cylindrical bolt.

The convex sides of the metal strip are similarly screw-threaded, sothat when the bolt is completed the screw-threads will correspond and becontinuous for the entire length of the screw-threaded portion. Theopposite extremities of the strip are reduced, so as to form thesegmental projections or shoulders 3, which are duplicates and formasingle cylindrical reduced projection at the end of the bolt when thelatter is completed. After the strip of half-round metal has been bentinto the form of a bolt the latter is heated, and a Wedge-like implementis driven longitudinally between the opposite sections of the belt, soas to separate the same and form opposite spring-sections, therebyproducing an expansible bolt. A clamping device, such as a ring orcollar 4, is then fitted to the terminal projections of the bolt,so asto draw the sections tightly together in order that the bolt may be ofthe same diameter throughout the screw-threaded portion thereof and toreceive an ordinary nut 5, which is screwed upon the bolt in the usualmanner. It will be observed that the bolt-contracting collarlies withinthe circular periphery of the bolt, whereby the latter is free fromlateral projections in order that it may be conveniently thrust througha bolt-opening and maintained. in condition for the reception of a nut.

To look the nut upon the bolt, it is merely necessary to remove theclamping ring or collar 4, thereby releasing the spring-sections of thebolt, which will spring apart as indicated in Fig. 2 of the drawings,thereby binding the threads of the bolt upon the threads of the nut andholding the latter against accidental displacement. However, the tensionof the spring-sections is not sufficient to prevent the nut from beingremoved by forcibly turning the nut in a reverse direction. Thecontracting device normally remains on the bolt until the nut has beenapplied to its set position for use and is removed only after the nuthas been thus applied.

It-will be understood that the present device is a complete article, asthe ring or collar 4: is applied in the original manufacture of thebolt, the jaws being drawn together by means of a suitable clampingimplement having its jaws faced with copper or some soft material whichwill not damage the screwthreads of the bolt.

What is claimed is 1. A new article of manufacture,consisting of anormally-contracted laterally-expansible bolt, having a nut fittedthereon, and a separate detachable bolt-contracting device normallycarried by the bolt, said device being removed and the bolt expandedonly when the nut has been set for use upon the bolt.

2. A new article of manufacture, consisting of a bolt, having itsscrew-threaded end split longitudinally and forming oppositelaterallyexpansible longitudinal spring-sections,a nut fitted to thebolt, and a detachable terminal bolt-contracting device carried by theouter ends of the sections when the bolt is not in use, and which isremoved only when the nut has been applied to its set position.

3. A nut-lock comprising a bolt having longitudinal spring-sections, aremovable clamping-collar normally holding the sections together, and anut fitted to the springsections.

l. A nut-lock comprising a bolt having longitudinal spring-sections, theouter ends of which are provided with corresponding reduced projections,a clamping-collar removably embracing the projections and normallyholding the spring-sections together, and a nut fitted to thespring-sections of the bolt.

5. A bolt, formed from a single strip of halfround metal, having theconvex sides of its opposite end portions provided with correspondingscrew-threads, and reduced segmental terminal projections, the metalstrip being bent intermediate of its ends and having its flat facesbrought into contact and then separated slightly to formspring-sections, and a removable collar fitted to the combined terminalprojections and normally holding the spring-sections together.

6. A new article of manufacture, consisting of a bolt having itsscrew-threaded end split longitudinally forming opposite longitudinalsections which are sprung apart forming laterally-expansible sections, anut fitted to the bolt and a terminal bolt-contracting device carried bythe outer ends of the spring-sections,whereby the bolt is normallycontracted, said devicelying within the circular periphery of thebo1t,whereby the bolt is free from lateral projections, the contractingdevice being removed and-the bolt expanded only after the nut has beenapplied to its set position.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in the presence of two Witnesses.

BENNETT O. MORGAN. HARRY H. MAIN, JR. Witnesses:

A. H. J OYNT, F. C. SOHERRER.

